Biceps Location : The biceps is a muscle on the front part of the upper arm. There is a short head and a long head which both work together as a single muscle. Attachment : The biceps origin is located at the Scapula in the shoulder joint and inserts into the radius and ulna past the elbow joint by the biceps tendon. Function : When the biceps contracts it pulls the forearm up. Joint : The insertion is just past the elbow joint. Joint Type : Hinge Joint
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· Web viewJoint Type: Hinge Joint. Triceps. Location: The triceps is a muscle on the back part of the upper arm. There is a lateral, medial and long head that all work together
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Biceps
Location: The biceps is a muscle on the front part of the upper arm.
There is a short head and a long head which both work together as a single muscle.
Attachment: The biceps origin is located at the Scapula in the shoulder joint and inserts into the radius and ulna past the elbow joint by the biceps tendon.
Function: When the biceps contracts it pulls the forearm up.
Joint: The insertion is just past the elbow joint.
Joint Type: Hinge Joint
Triceps
Location: The triceps is a muscle on the back part of the upper arm.
There is a lateral, medial and long head that all work together as a connective immovable muscle.
Attachment: The triceps origin is at the humerus and the scapula and inserts into the ulna.
Function: Triceps are primarily responsible for extending the elbow.
Location: The pectoralis major covers much of the front upper chest.
It is a large fan-shaped muscle.
Attachment: The pectoralis major’s origin is at the sternum and the cartilage of the second through the sixth rib. The insertion attaches to the clavicle and the humerus just below the shoulder.
Function: The major function of the pectoralis major is to move the shoulder and arm toward the chest.
Joint: The insertion point is just past the shoulder on the humerus.
Location: The latissimus dorsi runs obliquely, laterally, and superiorly through the back and armpits.
The name means “broadest muscle of the back.” It is one of the widest muscles in the human body. The shape is triangular.
Attachment: The latissimus dorsi has origins at the thoracic and lumbar vertebrae, sacrum, pelvis and the four most inferior ribs and inserts into the back of the humerus.
Function: The major function of the latissimus dorsi is to pull the arm towards the back.
Joint: The insertion point is on the back of the humerus which lies below the shoulder.
Location: The abdominals are located between the ribs and the pelvis on the front of the body.
We have four main abdominal muscle groups; the transverse abdominis, the rectus abdominis, the external oblique muscles and the internal oblique muscles.
Attachment: The abdomen originates from the thoracic diaphragm and inserts into the pelvis and between the lumbar vertebrae and sacrum.
Function: The major function of the abdomen is to flex the trunk.
Helps hold organs in place by regulating internal abdominal pressure.
Location: The quadriceps are located on the front of the upper leg (thigh).
The Latin word quadriceps means “four headed.” The four muscles are the; rectus femoris, vastus lateralis, vastus medialis, vastus intermedius.
Attachment: The vastus lateralis, medialis and intermedius originate from the femur and insert into the patella (knee). The rectus femoris originates from the pelvis and inserts into the patella.
Function: The major function of the quadriceps is to straighten the knee and raise the leg at the hip.
Location: The Sartorius muscle is located on the anterior region of the thigh.
The Sartorius muscle is the longest muscle in the entire body.
Attachment: The Sartorius originates at the pelvis where it then crosses the hip joint and thigh. It then runs down the interior of the knee and descends to insert on the inside of the tibia.
Function: The major function of the Sartorius is rotate the thigh at the hip. It also helps to flex the leg. These functions working together pulls the foot and ankle toward the knee of the opposite leg.
Joint: It works upon both the knee and the hip joints.
Location: The gastrocnemius is located on the back of the lower leg (calf).
The gastrocnemius has two immovable ends (heads); the medial head and the lateral head.
Attachment: The gastrocnemius originates at the femur (one from the outside/lateral of the femur and the other from the center/medial of the femur. The bottom of the muscle inserts at the Achilles tendon which descends to the heel and inserts into the calcaneus.
Function: The gastrocnemius has the major function of raising you up on your toes.
Joint: The insertion is just past the ankle in the heel.
Location: The anterior tibialis is located on the front of the lower leg (shin).
The gastrocnemius has two immovable ends (heads); the medial head and the lateral head.
Attachment: The anterior tibialis originates at the tibia and runs down the shin and inserts at a tendon that crosses the ankle and attaches to the foot. In the foot the tendon inserts into the metatarsals.
Function: The major function of the anterior tibialis is that it pulls the foot up towards the lower leg.
Location: The sternocleidomastoid is a long muscle on the side of the neck that extends from the thorax (chest) to the skull right behind the ear.
Attachment: The sternocleidomastoid originates at the inside part of the clavicle and inserts at the temporal bones (skull) mastoid process, located near the ear and base of the skull.
Function: The major function of the sternocleidomastoid is to flex the neck and to turn the head side to side.
The sternocleidomastoid also helps in forced inspiration while breathing.